生物质化学链转化技术研究进展

Preparation of fuels and chemical materials through biomass chemical looping is an important direction in the field of engineering thermochemistry. How to effectively use chemical conversion to achieve efficient and clean utilization of biomass energy is a hot spot in industry and academia. This paper reviews the research progress from the aspects of chemical-looping combustion(CLC), chemical-looping gasification(CLG), chemical looping with oxygen uncoupling(CLOU), chemical-looping reforming (CLR), and chemical-looping hydrogen generation (CLHG), and focuses on the changes of physicochemical properties of oxygen carriers in the of biomass chemical looping conversion process (BCLP). The characteristics of reaction devices and systems were compared and analyzed. Based on the chemical characteristics of the main components of biomass, the influence mechanism of pretreatment and ash composition on the chemical looping conversion process should be investigated. The rational design and accurate construction of oxygen carrier based on electron and oxygen ion transport characteristics should be fully considered. The matching of reactor and intrinsic characteristics of the reaction on time scale and spatial scale, polygeneration system coupled with biomass chemical looping conversion technology and other engineering thermochemical technologies are several aspects that need to be addressed in further research.